B7- Competition, Biotic and abiotic factors, Adaptations, Sampling in an ecosystem, How materials are cycled, Global warming Flashcards
1
Q
Define Adaptation
A
When organisms are adapted to survive in certain habitats
2
Q
3 types of adaptations
A
Behavioural, Functional and Structural
3
Q
Define abiotic and biotic factors
A
abiotic-non-living
biotic-living factors
4
Q
What do plants and animals compete for
A
plants-light,water,space,minerals
animals-food,water, territory
5
Q
What is a transect
A
A line used to investigate the changing factors across an area and how they affect the distribution of organisms
6
Q
How to use a transect
A
- Place line across study area
- Count number of organisms in quadrat
- Move quadrat along tape and repeat at regular intervals
7
Q
How to use a quadrat
A
- count number in squares
- place randomly
- repeat at regular intervals
8
Q
Describe carbon cycle
A
Let out by combustion Taken in by photosynthesis Release by respiration Dissolves in oceans, locked up in fossil Part of animal and goes through food chain
9
Q
Describe Water cycle
A
- Water evaporates and condenses to form clouds
- then clouds rain as a form of precipitation
- water goes through plants down to river by transpiration
10
Q
Global Warming(c9 version)
A
- short wavelength of UV light is radiated onto earth’s surface
- earth absorbs this and remits it at a longer wavelength of infrared where it either escapes in the atmosphere or is trapped by a layer of greenhouse gases
11
Q
How to calculate percentage cover
A
- count no of squares down and across
- count no of small squares which are half covered
- multiply by 100
12
Q
Calculate estimation size
A
mean number of organisms x (total area samples divide area of quadrat)
13
Q
Consequences of global warming
A
- earth temp rises
- ice caps melt
- reduces biodiversity
- animals can’t adapt to conditions so die or extinct
